Question

Evaluate the expression. Question 9 options: A) tan π∕56 B) tan 17π∕56 C) –tan 17π∕56 D) –tan π∕56

Answer 1

Answer:

A

Step-by-step explanation:

Note the expansion

tan(a - b) = $\frac{tana-tanb}{1+tanatanb}$

We are given the right side of the expansion , then left side is

tan($\frac{\pi }{7}$ - $\frac{\pi }{8}$ )

= tan($\frac{8\pi -7\pi }{56}$ )

= tan ($\frac{\pi }{56}$ ) → A